Acer Altos G520 series User Manual page 177

Diagnostic LED Decoder
Check
G=Green, R=Red, A+Amber
point
MSB
A2 R
A4 R
A7 R
A8 A
A9 A
AA A
AB A
AC A
LSB
OFF A OFF
G R OFF
G A G
OFF R OFF
OFF R G
OFF A OFF
OFF A G
G R A
Description
Takes care of runtime
image preparation for
different BIOS modules.
Fill the free area in F000h
segment with 0FFh.
Initializes the Microsoft
IRQ Routing Table.
Prepares the runtime
language module.
Disables the system
configuration display if
needed.
Initialize runtime
language module.
Displays the system
configuration screen if
enabled. Initialize the
CPU's before boot, which
includes the programming
of the MTRR's.
Prepare CPU for operating
system boot including
final MTRR values.
Wait for user input at
config display if needed.
Uninstall POST INT1Ch
vector and INT09h vector.
Deinitializes the ADM
module.
Prepare BBS for Int 19
boot.
End of POST initialization
of chipset registers.
167